Core-breaker.



F. CECCONI.

CORE BREAKER,

API'LICKTION FILED JULY 12. 191.

Patented Nov. 20, 1917.

a SHEETS-SHEET 1. v 4

E. CECCONL CORE BREAKER. APPLECATION man JULY 12.1915.-

Nov; 20, 1917 3 SHEETS-SHEET 2-.

UNITED sTAT s PATENT oEEioE. A

FRANCESCO CECCONI, OF WATERBURY, CONNECTICUT.

cons-BREAKER.

To all whom it may concern:

Be it known that I, FRANCESCO CEcooNi, a subject of the Kingof Italy, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a v new and useful Improvement in Core-Break- Figure l a plan View of a core breaker.- constructed in accordance with my inventlon shown with the cover removed.

Fig. 2 a sectional view on the line' 22 of Fig. 1.

Fig. 3 a sectional view on the line 3-3 of Fig. 1.

Fig. 4 a view in rear elevation.

This invention relates to an improvement in core breakers adapted to break or disintegrate thecore inside of a cast-metal tube.

In the usualpractice, these cast-metal tubes are rapped by hand with hammers to break or disintegrate the core so as to allow it to be poured out of the tube. The object of this invention'is to provide a support for a castmetal tube containing a core, and a series of hammers which will alternatelv rap the tube so as to break or disintegratethe core therein. A further object of the invention is to so inclose the mechanism that this operation may be performed without much noise as 1s necessarily the case when it is done by hand;

and the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention, I employ a front frame 6 and a rear frame 7 the front frame formed with flanges 8 and 9 to which side walls 10 and 11 may be bolted, the walls being also bolted to the sides of the rear frame above which they project. The forward edge of the front frame is also provided with inwardly projecting flanges 12 and 13 to which a front wall 14 is bolted. The rear edges of the walls 10 and 11 project slightly beyond the rear frame 7, and

between them is located a rear wall 15 which of the front. frame is-provided with bearings 1 for a. driving Shaft 17 which is provided at Specification of Letters Patent;

one end with a fixed pulley l8 and a loose I pulley 19 which will be driven by a belt, not shown. On the shaft 17 is a pinion 20 mesh-- mg with a large gear wheel 21 fixed to a tripping shaft 22 mounted in the front frame.

.As herein shown, the front wall 14' is formed with a clearance opening 23 inclosed by a removable door 24 through which access may be had to the tripping shaft. This Patented Nov. 20, 191 '7.

Application filed July 12, 1917. Serial No. 180,069.

tripping shaft is formed with a series of' radial passages 25, herein shown as eight in number, and at different angles, and in eachof these openings is a tripper-arm 26 forked at its outer end in which is pivoted a roller 27. These arms each have a series of perforations 28, herein shown as three in number, through either one of which a key 29 may pass, the key extending through'the shaft so as to interlock the arms therewith and so as to project from the shaft tothe desired extent. These tripper-arms are respectively adapted to engage with, and lift a series of hammer-arms 30 which are formed from spring metal, these arms extending rearward onto the top of the rear frame 7 to which they are secured by means of plates. 31 connected to the top 32 of the rear frame by bolts 33, the hammer-arms being formed with longitudinal slots 34' through which the bolts extend thus permitting the longitudinal .adjustment'of the hammer-arms. Each of these arms has connected to it a hammer-head 35 in line with an anvil 36 which is mounted on a wood.

engage with the under edges of the hammerarms and raise the hammers above the anvil; and the continued movement of the trippingarms carries thembeyond the end of the hammer-arms and allows the hammers to descend and strike the tube resting upon the anvil,'the spring of the metal of the hammer-arms being sufiicient to strike a blow with necessary power to break or loosenth'e coreiwithini the tube. To provideforlift ing the hammer-arms and hold them out ofr operative position, I provide a slide 42 which.

is guided between the walls 10 and 11 by angle-irons 43, and this slide is connected to the upper ends of two pitmen 44 which are connected at their lower ends to levers 45 which are hung upon a rock-shaft 46 mounted in bearings 47 secured to the inner face of the side walls 10 and 11. These levers are offset at their outer-ends to extend adjacent to the side walls which are formed with segmental slots 53 through which handles 48 fixed to the ends of the levers 45 extend. The levers 45 are connected by a brace 49 so that both of the levers may be moved from either side. In the slide 42 are a series of cushions 50 each of which rests upon a spring 51, these cushions being in line with the several hammer-arms and so as to be struck thereby by the downward movement of the hammers, the springs yielding to permit the hammers to strike the tube withsufiicient force unless the levers 45 be turned. so -as tovraise the slide,.in which case the cushionsproject so far above the anvil as to. arrestthe. downward movement of the hammers before they come in :contact with a tube on the anvil, thus providing for the introduction or removal of a tube.- If greater power is required, the tripping-arms will bemoved outward; or. if less power, they willbemoved inward. In one case the hammer-arms will be raised to .a greater extent so'that the force of the blow will be increased; while inthe other case, the hammers will be raised only slightly so that a light blow will be struck. The top of the device will be closed by a sectional cover 52.

It will thus be seen that the mechanism is entirely inclosed so that the operation of hammering a tubeto break ordisintegrate a-core therein, may be accomplished without creating any .material .noise a very valu-v able construction inmetal work;

By-providmg a series of successlvely operating hammers, thecore inthe tube is rapidly broken or disintegrated so that when a tube has passedthrough-the machine the=core may bereadily poured out. With this machine the core inthe long tube may be broken very rapidly. Thus a machine with eight hammers may. do the work of eight operators.

It ,willbe understood that the machine is bolted 'or otherwise anchored to a floor so as to be. sufiiciently rigid to stand the neces I'claim:

1; A score breaker comprisingfront and I rear ssupportsinclosed bywwallsya series of i hammer ar'ms connected "with the rear support,- aktri-pper shaft. mounted inthe. front support, means for driving thetripper-shaft,

aseries of trapper-armsmountedxin' the tripper-shaft in line with the hammer-arms, hammers connected with the hammer-arms, and an anvil below the said hammers.

2. A core breaker comprising front and rear supports inclosed by walls, a. series of hammer-arms connected with the rear support, a tripper-shaft mounted in the front support, means for driving the trippen shaft, a series of radially adjustable tripperarms mounted in the tri'pper-shaft in line with the hammer-arms, hammers connected with'the hammer-arms, and an anvil below the said hammers.

3. A core breaker comprising. front and rear supports inclosed by-walls, acseries of longitudinally adjustable hammer-arms connected with the rear support, a tripper-shaft mounted in the frontsupport, means for driving the tripper-shaft, a series oftripperarms mountedlinthev tripper shaft inline with the hammer-arms, hammers connected with the hammer-arms,andan-anvil below said hammers.

4; A core breaker comprising. front and rear supports, an anvil located between them, hammer-arms, hammer-heads secured to the said hammer-arms in line with-said anvil, a tripper-shaft mounted inthe forward support, arms projecting radially from said tripper-shaft in line with said tripperarms, means for rotating the tripper-shaft,

whereby the hammer-arms will: be raised: and a allowed to drop, a transversely arrangedvertically movable slide beneath saidhammerarms, and a series of spring-actuated cush-. ions mounted in said slide in line with said hammer-arms.

A core breaker. comprising front and rear supports, an anvil located between: them, hammer-arms, hammer-heads secured to thesaid hainmerearins in line-with said anvil, atripper-shaft mounted inthe forward support, ar-mspprojectingradially from said tripper-shaft in line-with said:tripper-- arms, means for rotating the-tripper-shaft, whereby the arms willbe raised and allowed. to drop, a transversely arranged verticallymovable slide beneath said hammer-.arms, a series of spring-actuated cushionsmounted in said slide in line with said hammer-arms, and levers connected withlsaid fslide and 1 adapted to raise and lower the same.

6. A core breakercomprising front and" rear support-s, side walls connecting the front and rear supports, afront wall closing the front of the forward support and-a removable wall closing the rear wall of the rear support, an anvil mounted between the front and rear supports adjacent to the front" support, a tripper-shaft 'mounte'd in the a the tripper-arms, each of said hammer-arms provided with a hammer in line with the said anvil, a transversely arranged slide in rear of the anvil and below the hammerarms, said Slide carrying a series of spring said levers provided at their outer ends with 10 handles projecting through the side walls.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

FRANCESCO CECCONI. Witnesses:

FREDERIO C. EARLE,

MALCOLM P. NICHOLS.

Copies 0! this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

